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Wireless Cable Modem Gateway CG814WG v3 Reference Manual
Content Filtering and Firewall Rules 3-5
v1.0, June 2007
To enable a service, select its check box. To disable a service, clear its check box. The following
table describes the services.
Firewall Rules
A firewall has two default rules, one for inbound traffic (WAN to LAN) and one for outbound
traffic.
• Inbound Rules (Port Forwarding): These rules restrict access from outsiders. The default
rule is to block all access from outside except responses to requests from the LAN side. You
can use Port Forwarding to add predefined or custom rules to specify exceptions to the default
rule.
• Outbound Rules (Port Blocking): These rules control access to outside resources from local
users.The default rule is to allow all access from the LAN side to the outside. You can use Port
Blocking to add predefined or custom rules to specify exceptions to the default rules.
Table 3-1. Services
Settings Description
Firewall Features When Firewall Features are enabled, the gateway will
perform Stateful Packet Inspection (SPI) and protect
against Denial of Service (DoS) attacks.
VPN Pass Through When VPN Pass through is enabled, IPSec and PPTP
traffic will be forwarded. When it is disabled, this traffic will
be blocked.
Multicast
Web Features Filter Proxy
Filter Cookies
Filter Java Applets
Filter ActiveX
Filter Popup Windows
Block Fragmented IP Packets